a costume for Halloween
do you have your costume for Halloween yet?
still need a costume for Halloween
still looking for a costume for Halloween
what are you going to be for Halloween? celebrate Halloween
is going as a [vampire, mummy, nurse] for Halloween
I am going to be a [vampire] for Halloween
Halloween is right around the corner
what are you doing [on, for] Halloween?
are you doing anything fun for Halloween?
wished us a happy Halloween
throwing a party for Halloween
go trick-or-treating on Halloween
Halloween is my favorite holiday
dress up for Halloween
what are you dressing up as for Halloween?
am dressing up as a [vampire] for Halloween